CN201329536Y - Clamper for grinding flat grinder with high precision shaft key groove - Google Patents

Abstract

The utility model is a clamper for grinding flat grinder with high precision shaft key groove, belonging to a fixture clamper, characterized in that an intermediate section of a V-shaped groove of the clamper body is provided with a semi-circle shaped loop groove and a vertical rectangle through hole, a locking loop having a rectangle right cylinder lever is arranged in the semi-circle shaped loop groove slidingly, the lower half part of the rectangle right cylinder lever is provided with a rectangle inclined hole transversally, the left part of the clamper is provided with a corresponding rectangle blind hole penetrating with the rectangle inclined hole, a rectangle inclined iron which right lower side is an oblique plane and right part is provided with an internal thread hole is arranged in the rectangle blind hole slidingly, the right segment of the rectangle inclined iron is also arranged in the rectangle inclined hole slidingly, the right part of the clamper body is provided with a screw through hole which right end is a step hole penetrating with the rectangle blind hole, a right compression spring is mounted between the right end face of the rectangle inclined iron and the right end face of the rectangle blind hole, a mobile screw rod arranged and across the screw through hole is connected with the internal thread hole of the rectangle inclined iron rotatably, the mobile screw rod is rotated to drive the rectangle inclined iron to move to the right, the locking loop downward shift to lock a workpiece, the localization is accuracy, clamping is shortcut, and the machining precision and the production efficiency are all high.

Description

High accuracy shaft key groove surface grinding machine clamp

Technical field

The utility model belongs to frock clamp, especially relates to a kind of clamp of shaft key groove.

Background technology

Some axial workpiece, high-precision positioning spline is arranged on axle, keyway dimensional accuracy H7 level, keyway are to axle external diameter symmetry 0.015, because axial workpiece requires heat treatment, heat treatment deformation makes the assurance of axial workpiece precision be difficult to control, reach the high-precision requirement of this axial workpiece positioning spline, need to mill in advance before the heat treatment grinding after the heat treatment, to on the common plane grinding machine, finish the grinding of the high-precision positioning spline of axial workpiece, be difficult to guarantee that positioning accuracy is accurately consistent.

Summary of the invention

The purpose of this utility model is to propose a kind of high accuracy shaft key groove surface grinding machine clamp, can finish the grinding of the high-precision positioning spline of axial workpiece on the common plane grinding machine, and guarantees that positioning accuracy is accurately consistent.

The purpose of this utility model is achieved like this: a kind of high accuracy shaft key groove surface grinding machine clamp, comprise clamp body, this clamp body is cuboid, offer the V-shaped groove that be 90 ° angles vertical along its length on the top of this clamp body with the bottom surface, it is characterized in that laterally offering semicircle annular groove at the position, stage casing of clamp body V-shaped groove, and in the middle part of the bottom land corresponding to this semicircle annular groove, on clamp body, offer vertical rectangular through-hole downwards, the retaining ring of sliding dress locking workpiece in semicircle annular groove and rectangular through-hole, the top of retaining ring is the large semicircle ring-shaped article of inside radius greater than processed axle part radius, its underpart is the rectangle right cylinder bar with large semicircle ring-shaped article one, promptly correspondence is sliding in semicircle annular groove adorns the large semicircle ring-shaped article of retaining ring and rectangle right cylinder bar cunning is contained in the vertical rectangular through-hole, therefore the degree of depth of semicircle annular groove and width are wanted width and the thickness of correspondence greater than the large semicircle ring-shaped article of retaining ring, move up and down freely to reach in semicircle annular groove with the large semicircle ring-shaped article that guarantees retaining ring effectively to clamp shaft-like workpiece; The mobile process of just locking shaft-like workpiece that retaining ring is downward, be that move left and right by a rectangle wedge that matches with the rectangle inclined hole of rectangle right cylinder bar bottom realizes, for this reason, laterally offer the low right high rectangle inclined hole in a left side in the Lower Half of rectangle right cylinder bar, gradient is good with 12 degree, position corresponding to this rectangle inclined hole, in clamp body, laterally offer the rectangle blind hole from left to right, this rectangle blind hole reaches the right-hand part of clamp body always, in this rectangle blind hole, install the rectangle wedge, rectangle wedge and horizontal rectangle blind hole form and are slidingly matched, in the sliding again rectangle inclined hole that is contained on the rectangle right cylinder bar of the right section of this rectangle wedge, the lower right side of rectangle wedge is the inclined-plane, the inclined-plane corresponding matching of this inclined-plane and rectangle inclined hole, right part at the rectangle wedge is offered internal thread hole, the length of internal thread hole is wanted the stroke that enough retaining rings move up and down to be needed, in addition, offering the right-hand member that connects with the rectangle blind hole at the right part of clamp body from right-to-left is the screw vent of stepped hole, right compression spring is installed between the right side of the right part of rectangle wedge and rectangle blind hole, in screw vent, install mobile screw, be connected with the internal thread hole spinning of rectangle wedge right part after mobile screw passes screw vent and spring is compressed on the right side; In addition, offer the upper spring seat hole in the lower end section of rectangle right cylinder bar, on the base plate of installing with screw in the bottom of clamp body also correspondence offer the lower spring cup hole, compression spring in bottom is installed, with pushing tow rectangle right cylinder bar in upper and lower spring base hole; During the locking shaft-like workpiece, the mobile screw that turns clockwise, mobile screw drives the rectangle wedge and moves right, thus retaining ring moves down the locking shaft-like workpiece under the effect on inclined-plane; When being rotated counterclockwise mobile screw, the rectangle wedge moves to left under the effect of right side compression spring, unclamps shaft-like workpiece thereby move on the bottom compression spring promotion retaining ring; The large semicircle annular of retaining ring has guaranteed emery wheel processing stroke, while is at the round copper post of the large semicircle ring-shaped article inner ring surface of the outstanding retaining ring of top left and right symmetrically setting-in of the inner ring body of the large semicircle ring-shaped article of retaining ring, have only round copper post to contact during the locking shaft-like workpiece with shaft-like workpiece, protected the shaft-like workpiece surface effectively, and the processing of circle copper post, replacing are conveniently, prolonged the service life of anchor clamps more; These anchor clamps firmly are fixed on processed axle part on the V-shaped groove face, on the common plane grinding machine, finish the grinding of the high-precision positioning spline of shaft-like workpiece, accurate positioning, clamp quick, greatly improved machining accuracy and production efficiency, changed retaining ring and can accurately locate processing the shaft-like workpiece of different-diameter.

The high accuracy shaft key groove surface grinding machine clamp that the utility model proposed is finished the grinding of the high-precision positioning spline of shaft-like workpiece on the common plane grinding machine, simple in structure, easy to operate, accurate positioning clamps fast, has greatly improved machining accuracy and production efficiency.

Now in conjunction with the accompanying drawings and embodiments the high accuracy shaft key groove surface grinding machine clamp that the utility model proposed is described further.

Description of drawings

Fig. 1 is the main cross-sectional schematic of the high accuracy shaft key groove surface grinding machine clamp that proposes of the utility model.

Among Fig. 1: 1, retaining ring 2, circle copper post 3, clamp body 4, rectangle wedge 5, rectangle blind hole 6, bottom compression spring 7, mobile screw 8, base plate 9, right compression spring

The specific embodiment

As can be seen from Figure 1: a kind of high accuracy shaft key groove surface grinding machine clamp, comprise clamp body 3, this clamp body 3 is cuboid, offer the V-shaped groove that be 90 ° angles vertical along its length on the top of this clamp body 3 with the bottom surface, it is characterized in that laterally offering semicircle annular groove at the position, stage casing of the V-shaped groove of clamp body 3, and in the middle part of the bottom land corresponding to this semicircle annular groove, on clamp body 3, offer vertical rectangular through-hole downwards, the retaining ring 1 of sliding dress locking shaft-like workpiece in semicircle annular groove and rectangular through-hole, the top of retaining ring 1 is the large semicircle ring-shaped article of inside radius greater than processed axle part radius, its underpart is the rectangle right cylinder bar with large semicircle ring-shaped article one, promptly correspondence is sliding in semicircle annular groove adorns the large semicircle ring-shaped article of retaining ring 1 and rectangle right cylinder bar cunning is contained in the vertical rectangular through-hole, therefore the degree of depth of semicircle annular groove and width are wanted width and the thickness of correspondence greater than the large semicircle ring-shaped article of retaining ring 1, move up and down free and effective clamping work pieces with the large semicircle ring-shaped article that guarantees retaining ring 1 in semicircle annular groove; Retaining ring 1 is downward moves the process of just locking workpiece, be that move left and right by a rectangle wedge 4 that matches with the rectangle inclined hole of rectangle right cylinder bar bottom realizes, for this reason, laterally offer the low right high rectangle inclined hole in a left side in the Lower Half of rectangle right cylinder bar, gradient is good with 12 degree, position corresponding to this rectangle inclined hole, in clamp body 3, laterally offer rectangle blind hole 5 from left to right, this rectangle blind hole 5 reaches the right-hand part of clamp body 3 always, in this rectangle blind hole 5, install rectangle wedge 4, rectangle wedge 4 and horizontal rectangle blind hole 5 form and are slidingly matched, in the sliding again rectangle inclined hole that is contained on the rectangle right cylinder bar of the right section of this rectangle wedge 4, the lower right side of rectangle wedge 4 is the inclined-plane, the inclined-plane corresponding matching of this inclined-plane and rectangle inclined hole, rectangle wedge 4 will remain in the rectangle inclined hole in the anchor clamps use, can not break away from; Right part at rectangle wedge 4 is offered internal thread hole, and the length of internal thread hole is wanted the stroke that enough retaining rings 1 move up and down to be needed, and is formulated just: L=L ₁+ ctg12 ° * h, L is the internal thread degree of depth, L ₁Minimum screw-in depth for screw rod, h is retaining ring 1 stroke, in addition, offering the right-hand member that connects with rectangle blind hole 5 at the right part of clamp body 3 from right-to-left is the screw vent of stepped hole, in screw vent, install mobile screw 7, right compression spring 9 is installed between the right side of the right part of rectangle wedge 4 and rectangle blind hole 5, the permission reduction length of right compression spring 9 is greater than ctg12 ° * h, and mobile screw 7 passes screw vent and is connected with the internal thread hole spinning of rectangle wedge 4 right parts with right compression spring 9 backs; In addition, lower end section at rectangle right cylinder bar is offered the upper spring seat hole, also correspondence is offered the lower spring cup hole on the base plate of installing with screw 8 of clamp body 3 bottoms, compression spring 6 in bottom is installed in upper and lower spring base hole, with pushing tow rectangle right cylinder bar, the permission reduction length of bottom compression spring 6 is greater than the stroke that h is a retaining ring 1; During the locking workpiece, the mobile screw 7 that turns clockwise, mobile screw 7 drives rectangle wedge 4 and moves right, thus retaining ring 1 moves down the locking workpiece under the effect on inclined-plane; When being rotated counterclockwise mobile screw 7, rectangle wedge 4 moves to left under the effect of right side compression spring 9, unclamps workpiece thereby move on the bottom compression spring 6 promotion retaining rings 1; The large semicircle annular of retaining ring 1 has guaranteed emery wheel processing stroke, while is at the round copper post 2 of the inner ring surface of the outstanding large semicircle ring-shaped article of top left and right symmetrically setting-in of the inner ring body of the large semicircle ring-shaped article of retaining ring 1, have only round copper post 2 to contact during the locking shaft-like workpiece with shaft-like workpiece, protected the shaft-like workpiece surface effectively, and 2 processing of circle copper post, replacing are conveniently, prolonged the service life of anchor clamps more; During use, retaining ring 1 is placed on releasing orientation, the keyway of shaft-like workpiece is inserted in the retaining ring 1 up, the mobile screw 7 that turns clockwise is locked shaft-like workpiece; The anchor clamps that install shaft-like workpiece are placed on the magnetic worktable of common plane grinding machine, base plate 8 contacts with magnetic worktable, the left side of clamp body 3 is close on the reference block of surface grinding machine workbench, reference block will be higher than the thickness of base plate 8, and guarantee that workbench and anchor clamps cleaning can not have foreign matter, to guarantee the positioning accuracy of shaft-like workpiece, on the common plane grinding machine, finish the grinding of the high-precision positioning spline of shaft-like workpiece by these anchor clamps, accurate positioning, clamp quick, greatly improved machining accuracy and production efficiency, changed retaining ring 1 and can accurately locate processing the shaft-like workpiece of different-diameter.

Claims (2)

1, a kind of high accuracy shaft key groove surface grinding machine clamp comprises clamp body (3), it is characterized in that:

A, semicircle annular groove is laterally offered at position, stage casing at the V-shaped groove of clamp body (3), and in the middle part of the bottom land corresponding to this semicircle annular groove, on clamp body (3), offer vertical rectangular through-hole downwards, the retaining ring (1) of sliding dress locking shaft-like workpiece in semicircle annular groove and rectangular through-hole, the top of retaining ring (1) is the large semicircle ring-shaped article of inside radius greater than processed axle part radius, the degree of depth of semicircle annular groove and width correspondence are greater than the width and the thickness of the large semicircle ring-shaped article of retaining ring (1), the bottom of retaining ring (1) is and the rectangle right cylinder bar of large semicircle ring-shaped article one that promptly correspondence is sliding in semicircle annular groove adorns the large semicircle ring-shaped article of retaining ring (1) and rectangle right cylinder bar cunning is contained in the vertical rectangular through-hole;

B, laterally offer the low right high rectangle inclined hole in a left side in the Lower Half of rectangle right cylinder bar, position corresponding to this rectangle inclined hole, in clamp body (3), laterally offer rectangle blind hole (5) from left to right, this rectangle blind hole (5) reaches the right-hand part of clamp body (3) always, in this rectangle blind hole (5), install rectangle wedge (4), rectangle wedge (4) and horizontal rectangle blind hole (5) form and are slidingly matched, in the sliding again rectangle inclined hole that is contained on the rectangle right cylinder bar of the right section of this rectangle wedge (4), the lower right side of rectangle wedge (4) is the inclined-plane, the inclined-plane corresponding matching of this inclined-plane and rectangle inclined hole;

C, offer internal thread hole at the right part of rectangle wedge (4), offering the right-hand member that connects with rectangle blind hole (5) at the right part of clamp body (3) from right-to-left is the screw vent of stepped hole, in screw vent, install mobile screw (7), right compression spring (9) is installed between the right side of the right part of rectangle wedge (4) and rectangle blind hole (5), and mobile screw (7) is connected with the internal thread hole spinning of rectangle wedge (4) right part after passing screw vent and right compression spring (9);

D, offer the upper spring seat hole, go up correspondence at the base plate of installing with screw (8) of clamp body (3) bottom and offer the lower spring cup hole, compression spring (6) in bottom is installed in upper and lower spring base hole in the lower end section of rectangle right cylinder bar;

E, at the round copper post (2) of the inner ring surface of the outstanding large semicircle ring-shaped article of top left and right symmetrically setting-in of the inner ring body of the large semicircle ring-shaped article of retaining ring (1).

2, high accuracy shaft key groove surface grinding machine clamp according to claim 1, the gradient that it is characterized in that the rectangle inclined hole are 12 degree.